Once, We Ate Together.

Once, We Ate Together. is the 51.5th chapter of the Servamp manga series.

Summary
This bonus chapter is a flashback of the time when Mikuni worked at C3, revolving around his former relationship with Tsurugi and their days together. It's written out of Mikuni's perspective.

The chapter starts off with them meeting for the first time, eating dinner for two. Tsurugi introduces himself happily, Mikuni remains apathetic. After Tsurugi tells him that he can ask him anything since Tsurugi is the only one around his age, Mikuni asks how much Tsurugi knows about him.

Mikuni, internally, compares C3 to a hospital with horrible taste and sees it as a massive white box with Tsurugi being the only one to stick out.

The scene changes to night, Mikuni being unable to sleep. He's able to hear Tsurugi and Jeje talking in the room next door. They talk about trivial things like the reason as to why they're not sleeping or the meaning behind Jeje's name, which is hidden from the reader. Mikuni explains that these two would have a conversation every night.

One day, Tsurugi gets their documents for the next meeting, probably given to him by Touma. Mikuni asks if that person was his sibling, The chapter cuts to the moment of Tsurugi protecting Mikuni from being injured severely. Mikuni is furious, as he didn't ask Tsurugi for protection and it will only cause trouble. Tsurugi tells him that if Mikuni dies, he himself will get in trouble as well.

Later, as Tsurugi is recovering from his wounds, Mikuni orders Jeje to go visit him. He says that Tsurugi will misunderstand, which he does, and think Jeje came to see how he was doing on his own. This makes Tsurugi incredibly happy. A small flashback of a time when Mikuni is sick is shown. Everyone is extremely worried about him and offers to help him in one way or another. He thought they worried too much.

Mikuni says it was easy for them to think of each other as pitiful, however, they would never say that as they both knew it was something they should not do. The last scene is them meeting at the same table where they first met each other again. Tsurugi comments on how much Mikuni has grown, while Mikuni just says that Tsurugi never changes. This is probably the last time they saw each other before Mikuni officially left C3, as Mikuni is not in his uniform anymore and they seem to be saying goodbye to each other. Both walk out different doors, Jeje at Mikuni's side.

All that remains is the table they ate at together, Mikuni's glass still broken from that one night.